113 lines
2.5 KiB
C
113 lines
2.5 KiB
C
/* $Id$ */
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#ifndef TILE_H
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#define TILE_H
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#include "macros.h"
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#include "map.h"
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typedef enum TileTypes {
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MP_CLEAR,
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MP_RAILWAY,
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MP_STREET,
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MP_HOUSE,
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MP_TREES,
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MP_STATION,
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MP_WATER,
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MP_VOID, // invisible tiles at the SW and SE border
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MP_INDUSTRY,
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MP_TUNNELBRIDGE,
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MP_UNMOVABLE,
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} TileType;
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void SetMapExtraBits(TileIndex tile, byte flags);
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uint GetMapExtraBits(TileIndex tile);
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uint GetTileSlope(TileIndex tile, uint *h);
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uint GetTileZ(TileIndex tile);
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static inline bool CorrectZ(uint tileh)
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{
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/* tile height must be corrected if the north corner is not raised, but
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* any other corner is. These are the cases 1 till 7 */
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return IS_INT_INSIDE(tileh, 1, 8);
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}
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static inline uint TileHeight(TileIndex tile)
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{
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assert(tile < MapSize());
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return GB(_m[tile].type_height, 0, 4);
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}
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static inline bool IsSteepTileh(uint tileh)
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{
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return (tileh & 0x10);
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}
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static inline void SetTileHeight(TileIndex tile, uint height)
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{
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assert(tile < MapSize());
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assert(height < 16);
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SB(_m[tile].type_height, 0, 4, height);
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}
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static inline uint TilePixelHeight(TileIndex tile)
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{
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return TileHeight(tile) * 8;
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}
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static inline TileType GetTileType(TileIndex tile)
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{
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assert(tile < MapSize());
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return GB(_m[tile].type_height, 4, 4);
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}
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static inline void SetTileType(TileIndex tile, TileType type)
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{
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assert(tile < MapSize());
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/* Allow only MP_VOID to be set to border tiles. This code is put here since
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* it seems there is a bug that violates this somewhere. (Formely know as
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* the "old ship pf" bug, which presented a case in which this broke). It
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* can be removed as soon as the bug is squashed. */
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assert((TileX(tile) < MapMaxX() && TileY(tile) < MapMaxY()) || type == MP_VOID);
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SB(_m[tile].type_height, 4, 4, type);
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}
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static inline bool IsTileType(TileIndex tile, TileType type)
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{
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return GetTileType(tile) == type;
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}
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static inline bool IsTunnelTile(TileIndex tile)
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{
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return IsTileType(tile, MP_TUNNELBRIDGE) && GB(_m[tile].m5, 4, 4) == 0;
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}
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static inline Owner GetTileOwner(TileIndex tile)
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{
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assert(tile < MapSize());
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assert(!IsTileType(tile, MP_HOUSE));
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assert(!IsTileType(tile, MP_VOID));
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assert(!IsTileType(tile, MP_INDUSTRY));
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return _m[tile].m1;
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}
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static inline void SetTileOwner(TileIndex tile, Owner owner)
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{
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assert(tile < MapSize());
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assert(!IsTileType(tile, MP_HOUSE));
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assert(!IsTileType(tile, MP_VOID));
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assert(!IsTileType(tile, MP_INDUSTRY));
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_m[tile].m1 = owner;
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}
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static inline bool IsTileOwner(TileIndex tile, Owner owner)
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{
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return GetTileOwner(tile) == owner;
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}
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#endif /* TILE_H */
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